oj.uz

Submission #796708

# Submission time Handle Problem Language Result Execution time Memory
796708 2023-07-28T15:55:23 Z SlavicG Minerals (JOI19_minerals) C++17
90 / 100
 62 ms 5728 KB 
#include <bits/stdc++.h>
#include "minerals.h"
using namespace std;
 
#define sz(a) (int)a.size()
mt19937 rng(69);
//b - valoarea elementului, stateul (aprins/stins)
int ans = 0, prevans = -1;
const int N = 1e5 + 69;
int in[N], added[N];

void rec(vector<int> a, vector<pair<int, int>> b) {
    if(b.empty() || a.empty()) return;
    if(sz(b) == 1) {
        for(auto x: a) Answer(x, b[0].first);
        return;
    }
    int mid = (rng() % 2 ? sz(b) / 2 : min(sz(b) - 1, sz(b) / 2 + (int)rng() % 33));
    vector<pair<int, int>> left, right;
    for(int i = 0; i < sz(b); ++i) {
        if(i < mid) left.push_back(b[i]);
        else right.push_back(b[i]);
    }

    vector<int> first_half, second_half;
    for(auto& x: a) {
        if(added[x]) continue;
        if(in[x] <= mid) {
            first_half.push_back(x);
            x = -1;
        }
        else added[x] = 1;
    }

    {
        int change1 = 0, change2 = 0;
        for(auto& x: left) {
            if(!x.second) {
                ++change1;
            } else {
                ++change2;
            }
        }
        for(auto& x: right) {
            if(x.second) {
                ++change1;
            } else {
                ++change2;
            }
        }
        if(change2 < change1) swap(left, right), swap(first_half, second_half);
    }
 
    for(auto& x: left) {
        if(!x.second) {
            prevans = Query(x.first);
            x.second = 1;
        }
    }
    for(auto& x: right) {
        if(x.second) {
            prevans = Query(x.first);
            x.second = 0;
        }
    }
 
    shuffle(a.begin(), a.end(), rng);
    for(auto x: a) {
        if(x == -1) continue;
        if(sz(second_half) >= sz(right)) {
            first_half.push_back(x);
            continue;
        }
        if(sz(first_half) >= sz(left)) {
            second_half.push_back(x);
            continue;
        }
        int ans = Query(x);
        if(ans == prevans) {
            first_half.push_back(x);
        } else {
            second_half.push_back(x);
        }
        prevans = ans;
    }
    rec(second_half, right);
    rec(first_half, left);
}
 
void Solve(int n) {
    for(int i = 0; i < N; ++i) in[i] = INT_MAX;
    vector<int> p1, p2;
    vector<int> bulanea(2 * n);
    iota(bulanea.begin(), bulanea.end(), 1);
    shuffle(bulanea.begin(), bulanea.end(), rng);
    for(int i: bulanea) {
        ans = Query(i);
        if(ans == prevans) {
            p2.push_back(i);
            in[i] = ans;
        } else {
            p1.push_back(i);
        }
        prevans = ans;
        if(sz(p1) == n) {
            for(int j = 0; j < sz(bulanea); ++j) {
                if(bulanea[j] == i) {
                    for(int f = j + 1; f < sz(bulanea); ++f) {
                        p2.push_back(bulanea[f]);
                    }
                    break;
                }
            }
            break;
        }
    }
    assert(sz(p1) == n && sz(p2) == n);
    vector<pair<int, int>> b;
    for(auto x: p1) b.push_back({x, 1});
    rec(p2, b);
}
/*
4
1 5
2 6
3 4
7 8
*/
// g++ -Wall -lm -static -DEVAL -o minerals -O2 minerals.cpp grader.cpp -std=c++17

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 592 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 720 KB Output is correct
2 Correct 3 ms 848 KB Output is correct
3 Correct 5 ms 1104 KB Output is correct
4 Correct 11 ms 1612 KB Output is correct
5 Correct 22 ms 2384 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 592 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 11 ms 1612 KB Output is correct
9 Correct 22 ms 2384 KB Output is correct
10 Correct 2 ms 824 KB Output is correct
11 Correct 14 ms 1880 KB Output is correct
12 Correct 21 ms 2432 KB Output is correct
13 Correct 19 ms 2512 KB Output is correct
14 Correct 19 ms 2344 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 592 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 11 ms 1612 KB Output is correct
9 Correct 22 ms 2384 KB Output is correct
10 Correct 2 ms 824 KB Output is correct
11 Correct 14 ms 1880 KB Output is correct
12 Correct 21 ms 2432 KB Output is correct
13 Correct 19 ms 2512 KB Output is correct
14 Correct 19 ms 2344 KB Output is correct
15 Correct 59 ms 5304 KB Output is correct
16 Correct 58 ms 5196 KB Output is correct
17 Correct 54 ms 5308 KB Output is correct
18 Correct 53 ms 5136 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 592 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 11 ms 1612 KB Output is correct
9 Correct 22 ms 2384 KB Output is correct
10 Correct 2 ms 824 KB Output is correct
11 Correct 14 ms 1880 KB Output is correct
12 Correct 21 ms 2432 KB Output is correct
13 Correct 19 ms 2512 KB Output is correct
14 Correct 19 ms 2344 KB Output is correct
15 Correct 59 ms 5304 KB Output is correct
16 Correct 58 ms 5196 KB Output is correct
17 Correct 54 ms 5308 KB Output is correct
18 Correct 53 ms 5136 KB Output is correct
19 Correct 58 ms 5416 KB Output is correct
20 Correct 58 ms 5320 KB Output is correct
21 Correct 52 ms 5356 KB Output is correct
22 Correct 55 ms 5260 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 592 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 11 ms 1612 KB Output is correct
9 Correct 22 ms 2384 KB Output is correct
10 Correct 2 ms 824 KB Output is correct
11 Correct 14 ms 1880 KB Output is correct
12 Correct 21 ms 2432 KB Output is correct
13 Correct 19 ms 2512 KB Output is correct
14 Correct 19 ms 2344 KB Output is correct
15 Correct 59 ms 5304 KB Output is correct
16 Correct 58 ms 5196 KB Output is correct
17 Correct 54 ms 5308 KB Output is correct
18 Correct 53 ms 5136 KB Output is correct
19 Correct 58 ms 5416 KB Output is correct
20 Correct 58 ms 5320 KB Output is correct
21 Correct 52 ms 5356 KB Output is correct
22 Correct 55 ms 5260 KB Output is correct
23 Correct 54 ms 5472 KB Output is correct
24 Correct 60 ms 5500 KB Output is correct
25 Correct 53 ms 5492 KB Output is correct
26 Correct 54 ms 5312 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 592 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 11 ms 1612 KB Output is correct
9 Correct 22 ms 2384 KB Output is correct
10 Correct 2 ms 824 KB Output is correct
11 Correct 14 ms 1880 KB Output is correct
12 Correct 21 ms 2432 KB Output is correct
13 Correct 19 ms 2512 KB Output is correct
14 Correct 19 ms 2344 KB Output is correct
15 Correct 59 ms 5304 KB Output is correct
16 Correct 58 ms 5196 KB Output is correct
17 Correct 54 ms 5308 KB Output is correct
18 Correct 53 ms 5136 KB Output is correct
19 Correct 58 ms 5416 KB Output is correct
20 Correct 58 ms 5320 KB Output is correct
21 Correct 52 ms 5356 KB Output is correct
22 Correct 55 ms 5260 KB Output is correct
23 Correct 54 ms 5472 KB Output is correct
24 Correct 60 ms 5500 KB Output is correct
25 Correct 53 ms 5492 KB Output is correct
26 Correct 54 ms 5312 KB Output is correct
27 Correct 60 ms 5504 KB Output is correct
28 Correct 57 ms 5464 KB Output is correct
29 Correct 56 ms 5524 KB Output is correct
30 Correct 55 ms 5320 KB Output is correct

Subtask #8
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 592 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 11 ms 1612 KB Output is correct
9 Correct 22 ms 2384 KB Output is correct
10 Correct 2 ms 824 KB Output is correct
11 Correct 14 ms 1880 KB Output is correct
12 Correct 21 ms 2432 KB Output is correct
13 Correct 19 ms 2512 KB Output is correct
14 Correct 19 ms 2344 KB Output is correct
15 Correct 59 ms 5304 KB Output is correct
16 Correct 58 ms 5196 KB Output is correct
17 Correct 54 ms 5308 KB Output is correct
18 Correct 53 ms 5136 KB Output is correct
19 Correct 58 ms 5416 KB Output is correct
20 Correct 58 ms 5320 KB Output is correct
21 Correct 52 ms 5356 KB Output is correct
22 Correct 55 ms 5260 KB Output is correct
23 Correct 54 ms 5472 KB Output is correct
24 Correct 60 ms 5500 KB Output is correct
25 Correct 53 ms 5492 KB Output is correct
26 Correct 54 ms 5312 KB Output is correct
27 Correct 60 ms 5504 KB Output is correct
28 Correct 57 ms 5464 KB Output is correct
29 Correct 56 ms 5524 KB Output is correct
30 Correct 55 ms 5320 KB Output is correct
31 Correct 62 ms 5728 KB Output is correct
32 Correct 57 ms 5724 KB Output is correct
33 Correct 57 ms 5716 KB Output is correct
34 Correct 56 ms 5520 KB Output is correct

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 592 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 11 ms 1612 KB Output is correct
9 Correct 22 ms 2384 KB Output is correct
10 Correct 2 ms 824 KB Output is correct
11 Correct 14 ms 1880 KB Output is correct
12 Correct 21 ms 2432 KB Output is correct
13 Correct 19 ms 2512 KB Output is correct
14 Correct 19 ms 2344 KB Output is correct
15 Correct 59 ms 5304 KB Output is correct
16 Correct 58 ms 5196 KB Output is correct
17 Correct 54 ms 5308 KB Output is correct
18 Correct 53 ms 5136 KB Output is correct
19 Correct 58 ms 5416 KB Output is correct
20 Correct 58 ms 5320 KB Output is correct
21 Correct 52 ms 5356 KB Output is correct
22 Correct 55 ms 5260 KB Output is correct
23 Correct 54 ms 5472 KB Output is correct
24 Correct 60 ms 5500 KB Output is correct
25 Correct 53 ms 5492 KB Output is correct
26 Correct 54 ms 5312 KB Output is correct
27 Correct 60 ms 5504 KB Output is correct
28 Correct 57 ms 5464 KB Output is correct
29 Correct 56 ms 5524 KB Output is correct
30 Correct 55 ms 5320 KB Output is correct
31 Correct 62 ms 5728 KB Output is correct
32 Correct 57 ms 5724 KB Output is correct
33 Correct 57 ms 5716 KB Output is correct
34 Correct 56 ms 5520 KB Output is correct
35 Incorrect 59 ms 5728 KB Wrong Answer [2]
36 Halted 0 ms 0 KB -